Consistency in Individual Differences in Energy Intake Following Acute Exercise

剧烈运动后能量摄入个体差异的一致性

基本信息

批准号：
8464033
负责人：
Jessica L Unick
金额：
$ 6.86万
依托单位：
MIRIAM HOSPITAL
依托单位国家：
美国
项目类别：
财政年份：
2012
资助国家：
美国
起止时间：
2012-05-01 至 2014-07-30
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/8464033
关键词：
Acute Address Affect Affective Behavior Behavioral Body Weight Body Weight decreased Calories Cancer Control Characteristics Chronic Clinical Cognitive Data Diet Eating Eating Behavior Effectiveness Energy Intake Energy Metabolism Exercise Fatigue Fatty acid glycerol esters Feeling Financial compensation Food Future Health Hour Hunger Individual Individual Differences Lead Left Literature Malignant Neoplasms Measures Moods Obesity Obesity associated cancer Overweight Participant Phenotype Physical activity Physiological Population Procedures Protocols documentation Reporting Research Research Personnel Rest Rewards Risk Self-control as a personality trait Series Shapes Testing Time Training Training Programs Walking Weight Weight Gain Weight maintenance regimen Woman abstracting base cancer prevention cancer risk clinically significant energy balance men preference programs response sedentary

项目摘要

DESCRIPTION (provided by applicant): Project Summary/Abstract: Evidence suggests that physical activity (PA) may reduce the risk of several major forms of cancer. One proposed mechanism for this reduction in cancer occurrence is through the effect of PA on energy balance, specifically by creating an energy deficit. However, recent evidence suggests that there is marked individual variability in the effect of exercise on energy balance with acute studies demonstrating that some individuals significantly increase their energy intake (EI) post-exercise and are left with a positive energy balance ("compensators") while others decrease or slightly increase EI post-exercise and are left with an energy deficit ("non-compensators"). Engaging in compensatory eating behaviors following exercise could undermine the effectiveness of exercise for weight control and cancer prevention. Consequently, investigators have discussed the importance of determining the behavioral phenotype of "compensators" and "non-compensators" and efforts have already begun in this direction. However, one concern with this future research path is that we currently do not know whether an individual's EI response to exercise is consistent over time. That is, does someone who eats significantly more after exercise always eat that much more after an exercise bout? Therefore, the primary aim of this study is to determine whether one's acute EI response to exercise is consistent over time. We propose to examine 30 overweight/obese women, each of whom will participate in 3 pairs of testing sessions, with each pair consisting of an exercise (30 minutes of moderate-intensity walking) and resting (seated for 30 minutes) testing day, separated by 48-96 hours. Energy intake will be measured using an ad-libitum buffet meal served 1 hour post-exercise/rest. Following the completion of each of the 3 pairs of testing sessions, the mean difference in EI (EIdiff = EIex - EIrest) from each pair will be calculated and an intraclass correlation will be usd to examine whether the EIdiff is consistent within individuals over time. The examination of the consistency in acute EI responses to exercise can help shape the next series of studies on the effect of exercise on energy balance. If our hypothesis is supported and one's acute EI response to exercise is consistent, we can begin to examine the important clinical question of whether individual responses to chronic exercise (i.e., weight loss vs. weight gain) can be predicted from EI responses from 1 pair of testing sessions. That is, if an individual gains weight with exercise training, is this due to repeated increases in EI acutely following an exercise bout? In addition, future studies could begin to examine whether there are physiological, behavioral, and cognitive factors that predict whether an individual will increase or decrease EI post-exercise. Alternately, if our hypothesis is not supported, findings from our study can be used to power larger studies which examine whether differences in participants' responses to an exercise session (e.g., changes in affect, hunger, fatigue, etc.) contribute to higher or lower EI post-exercise.

描述（由申请人提供）：项目摘要/摘要：证据表明体力活动 (PA) 可以降低几种主要癌症的风险。一种提出的减少癌症发生的机制是通过 PA 对能量平衡的影响，特别是通过产生能量赤字。然而，最近的证据表明，运动对能量平衡的影响存在明显的个体差异，急性研究表明，一些人在运动后显着增加能量摄入 (EI)，并保持正能量平衡（“补偿器”）而其他人则在运动后降低或略微增加 EI，并留下能量赤字（“非补偿者”）。运动后进行补偿性饮食行为可能会削弱运动控制体重和预防癌症的效果。因此，研究人员讨论了确定“补偿者”和“非补偿者”行为表型的重要性，并且已经开始朝这个方向努力。然而，对这一未来研究路径的一个担忧是，我们目前不知道个人对运动的 EI 反应是否随时间推移保持一致。也就是说，运动后吃得多的人在运动后总是吃得更多吗？因此，本研究的主要目的是确定一个人对运动的急性 EI 反应是否随时间推移保持一致。我们建议对 30 名超重/肥胖女性进行检查，每人将参加 3 组测试，每组包括锻炼（30 分钟中等强度步行）和休息（坐 30 分钟）测试日，分开进行48-96 小时。能量摄入量将通过运动/休息后 1 小时享用的随意自助餐来测量。完成 3 对测试会话中的每一对后，将计算每对的 EI 平均差异 (EIdiff = EIex - EIrest)，并使用组内相关性来检查 EIdiff 是否随时间在个体内保持一致。检查运动对急性 EI 反应的一致性可以帮助形成接下来一系列关于运动对能量平衡影响的研究。如果我们的假设得到支持，并且一个人对运动的急性 EI 反应是一致的，我们就可以开始研究一个重要的临床问题：是否可以根据 1 对 EI 反应来预测个体对长期运动的反应（即体重减轻与体重增加）测试会话。也就是说，如果一个人体重增加在运动训练中，这是由于运动后 EI 反复急剧增加吗？此外，未来的研究可能会开始检查是否有生理、行为和认知因素可以预测个体在运动后会增加或减少 EI。或者，如果我们的假设不被支持，我们的研究结果可用于支持更大规模的研究，这些研究检查参与者对锻炼的反应差异（例如，情感、饥饿、疲劳等的变化）是否会导致更高或更高的运动强度。运动后 EI 较低。

项目成果

期刊论文数量（2）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Consistency in compensatory eating responses following acute exercise in inactive, overweight and obese women.

不活跃、超重和肥胖女性急性运动后补偿性饮食反应的一致性。

DOI：
10.1017/s000711451500046x
发表时间：
2015
期刊：
The British journal of nutrition
影响因子：
0
作者：
Unick,JessicaL;O'Leary,KevinC;Dorfman,Leah;Thomas,JGraham;Strohacker,Kelley;Wing,RenaR
通讯作者：
Wing,RenaR